Nut-lock.



PATENTED JUNESO, 1903., N. NEWMAN. NUT LOCK. APPLIOATION FILED snm. 24. 1902.

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mijne/$1585" Patented June 30, 1903.

PATENT OFFICE.

NAFTALY NEWMAN, OF -CHICAGO, ILLINOIS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent N o. 732,432,`dated June 30, 1903. I

Application led September 24,1902. Serial No. 124,631. (No model.)

T0 all whom it 7er/tty concern:

Be it known that I, NAFTALY NEWMAN, a citizen of the United States, `residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Nut-Locksgand I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel construction in a nut-lock, the object being to provide an efficient device of this character; and it consists in the features of construction and combinations of parts hereinafter fully described and-claimed.

In the accompanying drawings, illustrating my invention, Figure l is a view, partly in longitudinal section and partly in elevation, showing a nut-lock constructedin accordance with my invention. Fig. 2 is a transverse section of same on Vthe line 2 2 of Fig. l. Fig.

3 is a similar section with a plate shown inV Fig.

2 removed. Fig. 4. is a view similar to l, showing a modied form of construc- Fig. 5 is a section on the line 5 5 of Fig. tion.

G 6 of Fig. 2. v

Referring now to said drawings, A indicates a bolt provided at one end with the threads B, which latter are intersected by longitudinal grooves O, thus dividing the threads into a series of ratchet-teeth. The said threads B are adapted to receive a nut D, which is provided in its outer face with a recess E, in which a spring-actuated pawl F is pivotally mounted, which is adapted to engage the ratchet-teeth to prevent reverse motion of the nut. The said pawl is held in engagement with the threads by means of a small spring G and is provided at its free end with a projection I-I, by means of which it may be turned outgof engagement of the threads in an obvious manner, and thus release the nut. The said bolt A is further provided at its threaded end with a square projection I, which is adapted to pass through a square 4. Fig. G is adetail section on the lineV opening in a pear-shaped plate J, which is recessed in its inner face to receive the outermost threaded end of the bolt. The said plate .I is provided in its smaller end With an opening to receive a screw K, adapted to enter athreaded openin g L in the nut D, thereby obviously firmly locking said nut D in place. To protect said nut D and the locking de vices, I provide a sheet-metal cover M, which fits closely over the nut D and is provided in one or more of its walls with spring-tongues N, which enter and engage recesses O in the outer faces of the nut D.

The modified form of construction shown in Figs. 4 and 5 consists of a bolt P, provided on the outer end portion of its shank with threads Q, which are similarly divided by longitudinal grooves R to form ratchet-teeth. The nut S is provided with a radial recess, in which a dog T is longitudinally movable. In its outer face said nut S is provided with a recess U, in which a spring V is mounted, which engages and normally holds said dog in engagement with said ratchetteeth. The said dog is provided with one inclined face W, which is adapted to be engaged by a set-screw Y, mounted in a threaded opening in said nut, and when screwed forward will thereby force the dog out of engagement with said ratchet-teeth to release the nut.

I claim as my invention- In combination with the bolt and nut, said In testimony whereof I aiiix my signature in presence of two witnesses.

NAFTALY NEWMAN. Witnesses:

RUDOLPH WM. LoTz, E. F. WILSON. 

